Noble gases are unreactive because their outermost shell, the valence shell, has a full set of eight electrons.
Noble gases have completely filled orbitals / electron energy shells. They are stable and chemically inert (non-reactive). So generally they will not accept / gain / share electrons and they do not form compounds.
they have completely filled shells (or orbitals) and are hence stable and unreactive.
Their shells are always full (unless something wacky happens). This is why they are so unreactive.
Noble gases are very unreactive because the valence electron shell is filled.
It an atom that is extremely unreactive. The most inert atoms are the noble gases: helium (He), neon (Ne), argon (Ar), krypton (Kr) and xenon (Xe). Their valence electron shells are complete (the so-called octet rule is satisfied).
Noble gases have completely filled orbitals / electron energy shells. They are stable and chemically inert (non-reactive). So generally they will not accept / gain / share electrons and they do not form compounds.
they have completely filled shells (or orbitals) and are hence stable and unreactive.
Their shells are always full (unless something wacky happens). This is why they are so unreactive.
Noble gases are very unreactive because the valence electron shell is filled.
The number of electron shells depends on the noble gas. The number of shells will be equal to the period in which the noble gas is present.
They are noble gases whose electron shells are full. They cannot, therefore, form ions.
It an atom that is extremely unreactive. The most inert atoms are the noble gases: helium (He), neon (Ne), argon (Ar), krypton (Kr) and xenon (Xe). Their valence electron shells are complete (the so-called octet rule is satisfied).
In general, it is the Group 18 elements, which are the inert or noble gases, that do not want to react with other elements. You'll recall that helium, neon, argon, krypton, xenon and radon are the inert gases, and each one of them has a full outer (valence) electron shell. The fact that the valence shells of these elements are full will cause them to generally be unreactive.
The "Noble gases" of group VIII are unreactive, because they are stable, due to their electron arrangements. If an atom has a full outer shell, it is "happy" and will not bond with other atoms.
Group 18 elements are called noble gases. They are called noble gases because they are generally unreactive and do not readily form compounds with other elements. Their outermost electron shells are completely filled, which contributes to their stability and lack of reactivity.
he outer shell for electrons is full
Unreactive